September Weather in Au

Last updated: March 2, 2024

The weather in Au, Switzerland, during September is characterized by an average temperature of 14°C (57°F). Highs can soar to 25°C (77°F), while lows may dip to 4°C (39°F). Typically, the humidity level in Au throughout September hovers around 83%.

4°C (39°F)

Minimum temperature

14°C (57°F)

Average temperature

25°C (77°F)

Maximum temperature

83%

Humidity

Precipitation and Sunshine hours

In September, Au averages 124 mm (4.9 inches) of rainfall, typically over the course of 13 rainy days. The month enjoys an average of 12 hours 31 minutes of daylight, with the sun shining for approximately 10 hours 30 minutes each day. Additionally, there is a 47% probability of sunny days during this period.

124 mm (4.9 inches)

Precipitation

13 rainy days

Rainy days

10 hours 30 minutes

Sunshine hours

47%

Chance of sun

UV Index

In September, the UV Index in Au reaches a maximum of 6, indicating a level of High exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 25 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 1 2 3 4 6 6 6 5 4 2 1 1
Exposure Low Moderate High Moderate Low
Time to burn 45 min 30 min 25 min 30 min 45 min

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